164951572 has 6 divisors (see below), whose sum is σ = 288665258. Its totient is φ = 82475784.

The previous prime is 164951497. The next prime is 164951581. The reversal of 164951572 is 275159461.

164951572 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 99082116 + 65869456 = 9954^2 + 8116^2 .

It is a super-2 number, since 2×164951572² = 54418042210542368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20618943 + ... + 20618950.

Almost surely, 2^164951572 is an apocalyptic number.

It is an amenable number.

164951572 is a deficient number, since it is larger than the sum of its proper divisors (123713686).

164951572 is a wasteful number, since it uses less digits than its factorization.

164951572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41237897 (or 41237895 counting only the distinct ones).

The product of its digits is 75600, while the sum is 40.

The square root of 164951572 is about 12843.3473829839. The cubic root of 164951572 is about 548.4269897478.

The spelling of 164951572 in words is "one hundred sixty-four million, nine hundred fifty-one thousand, five hundred seventy-two".